Miley Cyrus posted a picture on Twitter wearing a crop top with backup dancers, showing off her abs but also a little underboob. The "We Can't Stop" singer was also just recently snapped wearing shorts that couldn't get any shorter.

The 20-year-old pop star tweeted a photo of herself wearing a crop top, with her arms lifted around her friends' shoulders, showing off a bit of her underboob. Cyrus is surrounded by her backup dancers in the photo, which she captioned: "Werk while we work! ❤❤❤"

After the rehearsal, it seems Miley might have "werked" herself too hard. She tweeted later that day: "Still stressin on this performance. Sick in bed. Neck , belly , throat, head..... It all hurts."

The Huffington Post suggests she was rehearsing for her "Good Morning America" performance on June 26 in New York.

Yesterday, Miley was spotted greeting some friends outside a recording studio in Los Angeles, according to E! Online. She was wearing a large black Michael Jordan jersey that covered up her tiny white short-shorts, showing off her long legs. She paired the outfit with towering striped black-and-silver stilettos.

Cyrus has been pushing the boundaries on her outfits recently, showing to the world that she's no longer a Disney child star. Liam Hemsworth's fiancé was also spotted wearing a blue jacket with the letters "FU" emblazoned in bold white across the back.

Meanwhile, Miley was in the news today for tweeting a bizarre threat to her father, who just recently announced his divorce from her mother Tish earlier this month.

"@billyraycyrus since you won't reply to my texts I'm giving you an hour to tell the truth or ill tell it for you," Miley tweeted along with a photo of her next to Dylis Croman, a woman who co-starred with her father in a production of "Chicago" last year, The Huffington Post reports.

Miley has since deleted the tweet, and tweeted: "Wtf? My twitter was just actin all types of cray!"